Diaphragm

ABSTRACT

A diaphragm pump having special use in marine use, as pumping fluid from the bilge of a yacht for example. The fulcrum for the pump operating lever also serves as a seal so that the pump can be mounted under a deck with an opening in the latter made watertight by the seal and so that the fulcrum can be operated above the deck. The pump mechanism assembly is associated with a body-member from which it is quickly detachable, the body member containing the inlet and outlet means for the fluid and valves controlling the same, and thus the pump mechanism assembly as a unit can be removed and dismantled rapidly for access to the working parts so that any clogging with debris sometimes found in yacht bilges, can be removed and the pump and body member reassembled without special tools. Two handle positions are provided without the need to add or change parts and the pump can be mounted in a variety of positions such as the deck or against a bulkhead.

[ DIAPHRAGM [72] Inventor: David V. Edwards, Mill Lane,

Neshanic, NJ. 08853 22 Filed: March 10, 1971 21 Appl.No.: 122,865

[52] US. Cl ..417/454, 417/571 [51] Int. Cl.....F04b 21/00, F04b 39/00, F04b 21/02,

F04b 39/10 [58] Field of Search ..417/571, 238, 360, 454

[56] References Cited UNITED STATES PATENTS 3/1919 Gorman,Jr ..4l7/454X ll/l97l Phillips ..4l7/238X Primary ExaminerRobert M. Walker Attorney-W. Lee Helms [451 Aug. 15, 1972 ABSTRACT A diaphragm pump having special use in marine use, as pumping fluid from the bilge of a yacht for exam ple. The fulcrum for the pump operating lever also serves as a seal so that the pump can be mounted under a deck with an opening in the latter made watertight by the seal and so that the fulcrum can be operated above the deck. The pump mechanism assembly is associated with a body-member from which it is quickly detachable, the body member containing the inlet and outlet means for the fluid and valves controlling the same, and thus the pump mechanism assembly as a unit can be removed and dismantled rapidly for access to the working parts so that any clogging with debris sometimes found in yacht bilges, can be removed and the pump and body member reassembled without special tools. Two handle positions are provided without the need to add or change parts and the pump can be mounted in a variety of positions such as the deck or against a bulkhead.

3 Claims, 6 Drawing Figures PATENTEDAus 15 m2 SHEET 2 [IF 2 DIAPHRAGM The invention will be described with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of the assembled pump.

FIG. 2 is a composite view of the two major members of the assembly separated and adapted to be joined by a quick release pin or pins.

FIG. 3 is a cross-sectional view of the pump, showing its inlet and outlet valves and parts of its operating members.

FIG. 4 is a view in elevation to show the valve carrying face of the pump.

FIG. 5 is a generally horizontal section through the pump, taken along the dotted line 55, FIG. 2 and partly in dotted lines.

FIG. 6 is a schematic vertical section through a deck and shoring the structure applied under a deck.

The pump comprises elements mounted on a bracket-carrier B, FIG. 2, and said elements include all which are mechanically operated. The said bracket with the elements carried thereby are adapted to be received in a pump body indicated generally by the numeral 1 l. The pump body has inlet and outlet openings for water hose connections 13, FIG. 2, as shown in FIG. 5 the inlet connection will join a chamber 45 and the outlet connection will be in communication with the adjacent chamber 46, the two chambers being separated by a baffle wall 40. The two chambers have a common face 14, FIG. 5, in which the inlet chamber has a small valve opening, whereas the outlet chamber has a larger valve opening, the said openings are respectively indicated at and 16. Flap valves 17 carried by the annular member of the pump, shown at 23, control the inlet and outlet valve-openings l5, and 16.

As stated, the body 11 has no mechanically operated parts, and it can be mounted in position with a degree of permanence. All of the working parts of the pump mechanism can be detached in assembly from the pump body, and with ease.

Referring to the assembled pump operating mechanism, the drawings show that the flap valves 17 controlling chambers 45 and 46 of the body 11 are directly carried by the annular head member of the pump and hence removable therewith from said body.

As shown in FIG. 3, the pump diaphragm is clamped directly on the pump head member 23. The flat part of the diaphragm is clamped between two washers 51, FIG. 3, by a bolt 32, to a connecting bracket 33. A bolt 34 passing through the two legs of the bracket 33 pivotally connects the lever 35. The lever is tubular in form and of such diameter to receive a pump handle 36.

Referring to FIGS. 1 and 2, the pump bracket B has a plate 37 formed with a hole to receive a fulcrum seal 20, FIG. 6. The body 11 also is formed with a plate member 18 with a hole 19, FIG. 2. When the pump mechanism assembly is fitted in the body 11, the said flap valves 17 line up with the large and small holes leading to chambers 45 and 46, making fluid tight seals, and the holes in the two plate members 1 37 and 18, FIG. 2, also line up, clamping the fulcrum seal between them. The tight, but quickly releasable, connection between pump bracket B and the receiving walls of body member 11 may be by employing any suitable means, such, for example, as friction or threaded studs, or a rotating cam pin or pins as indicated in position at 12, FIG. 1.

Operation of the pump lever back and forth, moves the diaphragm-connecting bracket back and forth, because, as shown in FIG. 6, the lever is seated in the fulcrum deck seal 20. As the pump diaphragm 28 is moved toward the valves 17, FIG. 5, the inlet flap valve closes the small valve hole 15, and the outlet valve opens allowing fluid to be forced out of the pump via the outlet pipe connection. On its return stroke the diaphragm moves away from said valves, the inlet flap opens chamber 45, allowing fluid to be drawn into the diaphragm and the outlet flap moves to closed position, preventing the fluid already pumped out from being drawn in again.

In the position of the elements shown in FIG. 6, plate 18 will be bolted to the deck 41 so as to effect a watertight seal at the deck opening at 40. Such bolting means is not shown in the Figure because it is an obvious expedient when said elements are brought into position.

Further, in the position of the elements shown in FIG. 6, the pump may be operated through the deck by inserting the handle 36 into the lever 35 through the opening at 40, or it may be operated below the deck by inserting the handle at the other end of the lever 35. It should be understood that the term deck" is descriptive of one application in mounting the pump assembly and body, and what has been said about deck also applies to mounting on a bulkhead or other part of a boat or other supporting area.

A feature of the present invention is that the pump mechanism may be removed from the body, the latter being held on the deck or a bulkhead, for example, with quick release in such areas which may have confined space. Any debris trapped in the flap valves can be removed with little effort, and other parts such as the diaphragm, given attention even when the worker is sitting down in the cockpit of the boat.

Having described my invention, what I claim and desire to secure by Letters Patent, is as follows:

1. A diaphragm water pump comprising two separable major units connected by quick release means, and

' comprising a first major unit on a bracket having a plate, a diaphragm mounted on said bracket, an opening in said bracket plate, a resilient fulcrum seal at said opening having means for receiving an operating lever, means on the diaphragm for receiving such lever and responding to its action, a head for the diaphragm having inlet and outlet openings, the second major unit being a body-casing adapted to receive the first major unit and having a plate adapted to register with the plate of the first major unit and having an aperture in register with said fulcrum seal, two chambers in said body casing, openings in a face wall of said body casing and each opening in register with one of the chambers, fluid inlet and outlet means for said chambers, valves intermediate the face wall of the casing and the diaphragm head, and quick connecting and release means for holding said first major unit finnly seated on the body casing, with the bracket plate of the first unit on the apertured plate of the body casing, and the diaphragm head opposed to said casing body face wall. 2. A diaphragm water pump constructed in accordance with claim 1, in which the resilient fulcrum seal has a through central aperture for receiving lever means at either of its opposite faces, the body casing being mountable under the deck or other surface, exposing the fulcrum seal for lever reception at either port for the mutually held first and second major units, or operated inwardly of said support, through sections of said lever adapted to extend the lever area to opposite sides of said fulcrum seal member.

* i l l 

1. A diaphragm water pump comprising two separable major units connected by quick release means, and comprising a first major unit on a bracket having a plate, a diaphragm mounted on said bracket, an opening in said bracket plate, a resilient fulcrum seal at said opening having means for receiving an operating lever, means on the diaphragm for receiving such lever and responding to its action, a head for the diaphragm having inlet and outlet openings, the second major unit being a body-casing adapted to receive the first major unit and having a plate adapted to register with the plate of the first major unit and having an aperture in register with said fulcrum seal, two chambers in said body casing, openings in a face wall of said body casing and each opening in register with one of the chambers, fluid inlet and outlet means for said chambers, valves intermediate the face wall of the casing and the diaphragm head, and quick connecting and release means for holding said first major unit firmly seated on the body casing, with the bracket plate of the first unit on the apertured plate of the body casing, and the diaphragm head opposed to said casing body face wall.
 2. A diaphragm water pump constructed in accordance with claim 1, in which the resilient fulcrum seal has a through central aperture for receiving lever means at either of its opposite faces, the body casing being mountaBle under the deck or other surface, exposing the fulcrum seal for lever reception at either face thereof through an opening to which the fulcrum seal is in register.
 3. A diaphragm pump constructed in accordance with claim 1, in combination with a lever for the diaphragm adapted to be operated outwardly of a support for the mutually held first and second major units, or operated inwardly of said support, through sections of said lever adapted to extend the lever area to opposite sides of said fulcrum seal member. 